<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <script>
    function Bar(){

    }   
   console.log(Bar.prototype===Function);//false
   console.log(Bar.prototype===Function.prototype);//false
   console.log(Bar._proto_===Function.prototype);//false
   console.log(new Bar()._proto_===Bar.prototype);//false
    //实例的_proto_和构造函数的prototype相等
    </script>
</body>
</html>